Bug: Incorrect await usage in TimerRingController causes build failure & possible crash

### Description

The TimerRingController misused await and accessed properties on a Future, leading to compile-time errors and a potential null crash.

- Problematic lines:
AudioUtils.playTimer(alarmRecord: await getFakeTimerModel().value); // `.value` on a Future
AudioUtils.stopTimer(ringtoneName: await getFakeTimerModel().ringtoneName); // property access before await
vibrationTimer!.cancel(); // potential null crash

- Impact:
Build fails with type/property errors.
Possible runtime crash if vibrationTimer is null.

What I tried
Reproduced by launching a timer ring; build failed due to the incorrect .value and property access on a Future. Verified crash risk by inspecting vibrationTimer.

### Screenshots

_No response_